Car-truck.



B. W. KABEL.

GAR TRUCK. y APPLICATION FILED FEB. 16, 1914. v I Y 1,124,746. l Patented Jan.12, 1915.

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GAR TRUCK.

APPLICATION FILED FEB-.16, 1914.

Patented Jan. 12, 1915.

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Specification of Letters Patent.

rauen appueacionmea rebrary 1e, 191e. serial no. 618,975.

T all whom 'it may concern:

Be it known that I, Brnns W. KADEL, a

' citizen of the United States, residing in the county of Roanoke and State of Virginia, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification.

This invention relates to improvements 1n car trucks and has. for its object to provide means for more nearly equalizing the wheel loads and also to. rovide a truck that. will be easy of inspection and in which broken springs may be readily replaced. I

``With these and other objects in view my invention consists in the constructionand the arrangement of elements as will be herein described and inally claimed.

In the. accompanying drawings Figure 1 is a plan view, partly in section, of the truck of my invention, and Fig. -2 a side elevation of the'same. Fig. 3 shows a side elevation of my truck having a modified form of light car springs. Fig, 4 shows a half sectional elevation of the truck of my invention taken on the lin'e AB, Fig. 2. Fig. 5

shows a part side elevation of my truck hav'-` ing a modified formV of loaded car springs and Fig. 6 is a part sectional elevational .View of the same, taken on the line CD, Fig; 5. Fig. 7 shows a part side elevation of my truck having a modified form of both light car springs and loaded car springs and Fig. 8 is a` part sectional elevational view of the same taken onthe line EF, Fig. 7.

` rEhe general construction of the truck depicted in the drawings is the same as that shown and described in the application of Lewis-Pilcher, Serial No. 787148, led August 28, 1913, but the various features of my invention as shortlyjto be described will be found applicableto many other forms of n six wheel trucks as well as to four wheel trucks.

In car trucks generally and particularly in freight car trucks .it has been ditlicult heretofore to maintainv proper equalization of the'vweight of the light car anion fthe varions wheels. This isldue to the. actthat the truck-.springs must, be.' made heavy.-

enough to carry the loaded car, hence the we ignt of the-light or empty car is not suficient to deflect the springs to any apprecable amount. The result of this is that 'Patented aan. is, reis.

when alow place is encountered inthe track line of the truck a very small amount' of spring travel will compensate for a considerable drop of the wheel, but in six wheel trucks, especially those having .bolsterspof platform construction, the springs are often located at some distance from the center of the truck. Hence a slight drop in the track will entirely relieve the wheel of the superimposed load unless special provision is made to avoid this.

This diculty .is especially evident in the newer and larger types of freight cars where the light weight of the car is so much less in proportion to the gross'load than' in some of the older types of cars. Y

To correct this trouble various means have been employed, as for example, in passenger equipment trucksv it is customary tojunction with the restrictions as to the maxiv mum and minimum allowable height of couplers will not permit the use of springs with a wide range of deflection, from the light car to the loaded car.

In freight. cars, graduated springs have been used, that is, springs made up of outer coils of heavy wire and inner coils of lighter wire. .The inner coils are made` longer than' the outer coils and Ywhen the empty carbody islet :down on the truck these. inner coils are deected until the heavier outer coils come into action and the weight of the lading is then carried mainly by the outer coils. This has proven partly successful, but the n height available for these springs has necessitated a design-of inner coils that work at of the various truck parts, especially the 2@ brakes.

Referring now to the drawings in which like parts are given the same reference numbers wherever they occur, 1 represents the wheels of a six Wheel truck on their axles,

2. These axles are journaled in the customary journal boxes 3 and the journal boxes are secured to the side frames 4 and 5. v The weight of the car body is carried on a center plate 6 which is formed integral With or secured to the truck bolster 7, the

truck bolster being provided with side bearings at 8.` The truck bolster 7 Vis further provided with outwardly extending arms 9 which are .adapted to carry the load of the 85 car body to the springs. All of these parts,

however, may be of any of the customary designsthis particular type of truck being shown to illustrate what may be accomplished by my invention.

In trucks as now constructed the springs rest on' the top of and are suv ported by the bottom member 10 of the side frames. the truck of my invention, however, I provide pockets 11 in this side frame member land the springs 12 for the light or empty car are let down into these pockets. These light car springs may be of any type, either coil springs as shown at 12 in Figs. 1-2 and 4 or' leaf :springs 13 as shown in Fig. 3.

.50 While the pockets for the light car springs are necessarily located in the side frames in this particular form of truck, yet in some types oftrucksit might be necessary t'o 1ocate them in other of the truck members, as

for example'in a four wheel freight truck the springs ordinarily are carried on a transverse spring plank. Hence in such a truck the depressed pockets would be in that member.

Resting on the light car springs is a plate orbearing 14 which is adapted to support' the heavy springs 15. When the weight of the light car is let down on the plates 14 the light cai-,springs will be deflected and the plate 14 will come nearly or altogether solid 65 on the top of the side frame member l0 or on some suitable stop, a convenient form of stop being to allow the light car springs to come solld. 'Ihus it will be seen that the light car springs will never be .worked beyond a predetermined stress and at the same time as great a deflection of the same may be secured as is deemed desirable, inasmuch as the light car springs may be worked at a high liber stress under the light car' load. 'lthe additional load coming from the truck bolster after the light car springs have gone solid or after the plate 14 has reached its stop will have no further eEectv on the light car springs but will atl'ect the heavier, or loaded car springs only.. Thus is will be seen that the two sets of springs work in series with each other up to a certain point and it will be further understood that while the light car springs 12 and 13 may not be entirely out of service at the light car load, yet their purpose is to provide deflection under the light car load, hence may be properly termed light car springs. Likewise, although the heavy or loaded car springs 15 are in action when the car is light or empty, yet their purpose is to support the heavy load coming from the loaded car and for this reason are herein termed loaded car springs. 'lhe loaded car springs 15 may be of any desired form, coil springs being shown in Figs. 5 and 6. But by the use of the light car springs let down into the pockets, I am enabled to use springs yof torsional bars disposed transversely of the truck and having 10( longitudinally extending lever ends at the outside. In order to be easy of application4 these springs might conveniently be made in U-shape as shown in Figs. 1-2-3 and 4, the weight of the bolster coming on the outer ends of the torsion bars or legs 16 and 17 and being transferred thence through the longitudinal lever ends 18 and 19 to the plates' 14. The reactions of the loads com- -'ing at the outer ends ofthe levers 18 and 19,

'a torsional stress is induced in the legs 16 and 17 of the U. At the inner end of this sprin a bolt or clip 21 is supplied in order to ta e care of the slight tendency of this end to move.

It will, of course,be evident that various similar forms of torsional s rings might be used here, as for example, t e torsion ar' might extendentirely across the truck, having reversely disposed lever arms at the opposite ends. Like-wise the inner end of the torsion bar might be simply held from turn-v mg.

The advantages of this form of spring over the coil springs as shown in Figs. 5 and 6 are seen in that it can be used in less heightthan the coil springs; in that it is more readily assembled and removed; and in that it provides more open spaces for vthe inspee-V tion of brake shoes.

In Figs. 7 and 8 is shown an arrangement of graduated springs as appliedto the side y -art Without departing from the spirit of the same.

Having thus described I claim is: 1. In a car truck, side frames, springs adapted to support the light car, pockets in said side frames adapted to receive said light car springs, and additional springs adapted to support the loaded car, said loaded car my invention, What springs being-supported by said side frames and being disposed without the said pockets in the side frames.

2. In a car truck, side frames, springs adapted to support the light car, pockets in said side frames adapted to receive the said light c ar springs, and additional springs adapted to support the loaded car, said loaded' car springs being supported by said side frames and being disposed without and above the said pockets in the side frames.

3. In a car truck, side frames, springs adapted to support the light car, pockets in said side frames adapted to receive the said light car springs, and additional springssuperimposed on said light car springs and*v Yadapted to support the loaded car.

In a car truck, side frames, springs adapted to support `the light car, pockets in said side frames adapted to receive the said light car springs, additional springs superimposed on said light car springs and adapted to support the loaded ear, and means for stoppingthe action of the light car springs.

5. In a car truck, side frames, springs adapted to support the light car, pockets in said side frames adapted to receive the said light car springs, plates resting on said light car spr-ings, and additional springs resting on said plates and adapted to support-the loaded car.

6. In a car truck, side frames, springs adapted to support the light car, pockets in said sideA frames adapted to receive the light .car springs, plates resting on said light car springs, add1tional springs resting on-said plates and adapted to support the loaded car, and a stop adapted to limit, the move-I' ment of the said plate on the said light carl springs.

7. ln a car truck, springs adapted to support the light car and additional springs adapted to support the loaded ear, said loaded car springs consisting of torsional bars disposed transversely of the truck and hav-- ing longitudinally extending levers at their outer ends. i

3. In a car truck, springs adapted to support the light car and additional springs working in series therewith adapted to support the loaded car, said loaded car springs consisting of torsional bars disposed transversely ofthe truck and having longitudinally extending levers at their outer ends.

9. In a car truck, springs adapted to support .the light car, supports for said light car springs having pockets adapted to receive the same, additional springs Working in series with said light car springs and adapted to support the loaded car, said loaded car springs consisting of torsional bars disposed transversely of. the truck and having longitudinally extending levers at their outer ends.-

10. In a car truck, side frames, springs adapted tol support the light car, pockets in said side frames adapted to receivethe said light car lsprings, and additional springs adapted to support the loaded cai', said loaded car springs consisting of tor-v sional bars disposed transversely of the truck and having longitudinally extending levers at their outer en'ds.

v'11. In a car truck, side frames, springs adapted to support the light car, pockets in said side frames. adapted to receive 'the said light car springs, additional springs superimposed on said light car springs and ada te`d to support the loaded car, said loadrcid car springs consisting of torsional bars disposedv transversely of the truck and having longitudinally extending 'levers at their outer ends.

V12. In a` car truck, side frames, 'springs adapted to support the light car, pockets in said side frames adaptedto receive the said light car springs, plates resting on said.

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lightV car springs, and additionalsprings resting on said plates and adapted to support the loaded car, said loaded car springs.

consisting of torsional bars disposed transversely of the truck and having longitudinally extending levers at'their outer ends.

13.4 In a car truck, .side frames, springs adapted to support the light car, pockets in said side frames.' adapted to receive the said light car springs, additional springs superimposed on said light car springs and adapted to support the loaded car,-sa1d loaded car. springs consisting of torsional bars disposed transversely of the truck and having longitudinally extending levers 'at their outer ends, and means for stopping the action of posedV transversely of the truck and havingthe light car springs. longitudinally extending levers at the outer- 14:. In a car truck, side frames, springs ends of each of the legs` of the U. adapted to support the light car, pockets in In testimony whereof l aflix my signature e said side frames adapted to receive the said in presence of two Witnesses.

light oar springs plates resting on said light car springs, and additional springs BYERS W' KABEL resting on said plates and adapted vto sup- Witnesses :r port the loaded car, said loaded car springs W B. Kenna l@ consisting of torsional bars of U-'shape dis H. B., WADE 

